[quote=@Ghost Shadow][color=SeaGreen][i][b]Talents:[/b][/i][/color]
[list]
[*][color=SeaGreen]Magic & Dueling[/color] - 


[*][color=SeaGreen]Legilimency[/color] - 

[*][color=SeaGreen]Animagus[/color] - 

[*][color=SeaGreen]Cunning & Manipulation[/color] - 

[*][color=SeaGreen]Scholarly Pursuits[/color] - 
[/list][/quote]

I forsee a 0% chance of McHaggis not asking you to tone down Viktor's strengths. He's a great duellist, an animagus that can read minds with all-round good, non-verbal magic with a genius with a broad academic background. The historian/librarian thing is a really cool angle, so I'm gonna predict that she's gonna say to focus on that -

[quote][color=SeaGreen][i][b]Weaknesses:[/b][/i][/color]
[list]
[*][color=SeaGreen]Dark Arts[/color] - Though Unmarked and holding no allegiance whatsoever to Lord Voldemort, Viktor is not opposed to the use of the Dark Arts, employing a number of Curses, Hexes and Jinxs to his repertoire of spells, including the infamous Killing Curse. This use of Dark Magic has affected Viktor slightly, giving him a pallid, somewhat sickly complexion and causing his hair to lose some of its lustrous color. On a psychological factor, Viktor will suffer from chronic nightmares and bouts of insomnia, which can have an adverse affect on him if not checked. 


[*][color=SeaGreen]Pragmatism[/color] - Perhaps Viktor's worst trait is his tendency to see the "big-picture", looking at long-term goals and effects as opposed to seeing things in the more short term. As a result, he has no problem sacrificing a dozen Wizards or Muggles if it means saving a hundred. This can make him indifferent or seemingly uncaring towards the feelings of others as he'll risk the anger or hatred of others if it means producing long-term beneficial results. 


[*][color=SeaGreen]Secrecy[/color] - Viktor is a highly secretive individual, never seeming to fully give away his plans or tactics to anyone. Though his loyalty is without question, one can rather easily tell that there's more to him than he gives off. He never discusses his past, always keeps others at arm's length and retains an air of mystery, seeming to prefer things that way. Because of this, Viktor has a hard time trusting other people, wary of their true intentions. As such, it can be difficult to call him dependable or truthful unless one fully comprehends his loyalty to the Ashes. 
[/list][/quote]

- while also giving him a more practical weakness. Being goal-oriented and secretive aren't necessarily weaknesses, and the slippery slope of darkness isn't really a chink in his day-to-day armour.

[quote][color=SeaGreen][i][b]Favourite Spells:[/b][/i][/color]
[list]
[*][color=SeaGreen][i]Sectumsempra[/i][/color] - A rather dangerous curse, when the incantation is uttered its effect is the equivalent of an invisible sword; it is used to slash the victim from a distance, causing rather deep wounds. The slash follows the user's wand movements. Due to the depths of the cut, the victims run the risk of dying from blood loss if treatment is not applied in time, if the wounds are not instantly fatal.[/list][/quote]

On a side-note, isn't Sectumsempra a Harry- and Snape-only spell? I don't know that it ever entered common usage (which is why Larry uses something similar but not actually the same ^^).